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Inverse-positive interval matrices. (English) Zbl 0628.65027
Several necessary and sufficient conditions are given for inverse positivity of an interval matrix \((A^{-1}\geq 0\) for each \(A\in A^ I)\). An iterative scheme for solving systems of linear interval equations with inverse positive matrices is presented.

65F10 Iterative numerical methods for linear systems
65G30 Interval and finite arithmetic
15B48 Positive matrices and their generalizations; cones of matrices
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